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Update boxplot.py #60783

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Update boxplot.py #60783

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c307128
Update boxplot.py
serhiisavingit Jan 24, 2025
30eeec9
Updates from editor
serhiisavingit Jan 24, 2025
9c44e23
Refine error message for invalid color key
serhiisavingit Jan 25, 2025
2c95f2c
Fix line break in `color_kwds` parameter.
serhiisavingit Jan 26, 2025
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17 changes: 10 additions & 7 deletions pandas/plotting/_matplotlib/boxplot.py
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,8 @@
TYPE_CHECKING,
Literal,
NamedTuple,
Optional,
Union,
)
import warnings

Expand Down Expand Up @@ -98,7 +100,8 @@ def __init__(self, data, return_type: str = "axes", **kwargs) -> None:
# error: Signature of "_plot" incompatible with supertype "MPLPlot"
@classmethod
def _plot( # type: ignore[override]
cls, ax: Axes, y: np.ndarray, column_num=None, return_type: str = "axes", **kwds
cls, ax: Axes, y: np.ndarray, column_num: Optional[int] = None, return_type: str = "axes", **kwds

):
ys: np.ndarray | list[np.ndarray]
if y.ndim == 2:
Expand All @@ -107,6 +110,9 @@ def _plot( # type: ignore[override]
# if any cols are empty
# GH 8181
ys = [v if v.size > 0 else np.array([np.nan]) for v in ys]
for v in ys:
if v.size == 0:
warnings.warn("Empty array detected, replacing with NaN", stacklevel=find_stack_level())
else:
ys = remove_na_arraylike(y)
bp = ax.boxplot(ys, **kwds)
Expand Down Expand Up @@ -166,10 +172,8 @@ def _caps_c(self):
def _get_colors(
self,
num_colors=None,
color_kwds: dict[str, MatplotlibColor]
| MatplotlibColor
| Collection[MatplotlibColor]
| None = "color",
color_kwds: Optional[Union[dict[str, MatplotlibColor],
MatplotlibColor, Collection[MatplotlibColor]]] = "color",
) -> None:
pass

Expand Down Expand Up @@ -391,8 +395,7 @@ def _get_colors():
result[key_to_index[key]] = value
else:
raise ValueError(
f"color dict contains invalid key '{key}'. "
f"The key must be either {valid_keys}"
f"color dict contains invalid key '{key}'. The key must be either {valid_keys}"
)
else:
result.fill(colors)
Expand Down
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